a little boy's very brave battle and his christmas wish. >> he has been battling cancer most of his young life, and his wish was to simile have christmas a little earlier than usual in an attempt to feel better. abc's david muir has the story. >> reporter: little 5-year-old nathan norman is getting the mail and lots of it. so much so his entire family right there helping him, mom, dad, sister there too. their mailbox already overflowing with christmas cards. >> nathan, racing in to wish you a merry christmas. >> reporter: the holiday coming early for a boy who wanted it to. nathan has been fighting cancer since he was just a year old. his mom and dad and the phone calls that come at all hours of the day. >> it's never good when the doctor's office calls you after hours. >> reporter: what started as brain cancer has spread. he's had surgery, chemotherapy, and he's fighting it. his latest scan shows tumors have been stubborn. and even at 5, knowing he's up against a fight, the one thing that would make him happy and get him through it would be to celebrate an early christmas. >> nathan had